class Person(object):
    def __init__(self, name, gender, birth,**kw):
        self.name = name
        self.gender = gender 
        self.birth = birth
        for k, v in kw.iteritems():
            setattr(self, k, v)

xiaoming = Person('Xiao Ming', 'Male', '1990-1-1', job='Student')

print xiaoming.name
print xiaoming.job